Process for making a two layer thermal negative plate

摘要

A process for forming a negative image useful as a printing plate is disclosed. A photosensitive assembly that comprises (a) a hydrophilic support, (b) a first layer that comprises a polymer that is soluble or dispersible in an aqueous alkaline solution, (c) a second layer that comprises at least one o-quinonediazide compound, and (d) an infrared absorbing compound is: (1) flood exposed with ultraviolet radiation; (2) imagewise exposed with infrared laser radiation; and (3) developed to produce the negative image.